Before the Baltimore Ravens and San Francisco 49ers kick off Super Bowl XLVII, it is tradition to get a stirring rendition of the National Anthem, performed this year by Alicia Keys, to get everything going.

It is almost surprising that Keys hasn't been asked to do the Anthem at a Super Bowl. When she burst onto the scene 12 years ago, she was lauded for having one of the best voices in the business and the NFL is usually quick to land new talent for its biggest event.

Whatever the reason for the delay is, Keys will be taking center stage in the Mercedes-Benz Superdome to do what she does best, and we have all the last-second information you need to get ready for the festivities.

Where: Mercedez-Benz Superdome

When: Approx. 6:40 p.m. ET

Facts to Know About Alicia Keys

Keys' first studio album "Songs in A Minor," released in 2001, was a critical and commercial success, launching her into the stratosphere of R&B singers in this country.

She won five Grammy Awards in 2002, including Best New Artist and Song of the Year for "Fallin." She has been nominated for 27 Grammy Awards in her career, winning 14 of them through 2012.

Keys has also performed on Saturday Night Live twice in her career, in 2001 and 2010. She has a sports connection during one of her appearances, as Charles Barkley was the host the second time she performed.

As is tradition with the Super Bowl, there are a few prop bets floating around that gamblers can place a wager on the National Anthem and the singer.

How Long Will It Take Alicia Keys to Sing the National Anthem?

Over 2 minutes, 10 seconds (Even), Under 2 minutes, 10 seconds (-140)

While Keys is known for her voice, which could lead to her dragging out certain parts of the Anthem, I think the under is the safer bet here.

Keys has a little bit of Whitney Houston in her approach. Houston sang the National Anthem prior to the start of Super Bowl XXV and went just 116 seconds. That means Keys would have to go 15 seconds longer than that to beat the over odds.

Unless Keys deliberately tries to ham it up for the cameras and spotlight, which I can't imagine her doing in the scenario, making it past 130 seconds seems like a stretch.

Will Alicia Keys Be Booed During or After Her Rendition of the National Anthem?

Yes (+500)

The odds are too good that you almost have to place a wager on it, but unless Keys screws something up royally, there is no way she will be booed by the fans in attendance at the Superdome.

We would have to be talking something terrible, like Carl Lewis interrupting Keys and forcing her to sing the Anthem the way he did, in order for fans to boo her. It would just be such bad taste for the city of New Orleans.

Will Alicia Keys Forget or Omit at Least One Word from the National Anthem?

Yes (+200), No (-300)

This is a tricky one, because there are certain ways to change the Anthem to make it flow the way the singer wants it to that don't necessarily come off as deliberately forgetting the word. The use of the word "omit" in the wager is key.

I would say to take yes on this wager, just because you can get away with switching one thing up and not having it stand out like a sore thumb. Plus, having rehearsed for this moment countless times. Keys is going to be ready for the spotlight.